.. SPDX-License-Identifier: GPL-2.0 Kernel driver peci-dimmpower ========================== :Copyright: |copy| 2020 Intel Corporation Supported chips: One of Intel server CPUs listed below which is connected to a PECI bus. * Intel Xeon E5/E7 v3 server processors Intel Xeon E5-14xx v3 family Intel Xeon E5-24xx v3 family Intel Xeon E5-16xx v3 family Intel Xeon E5-26xx v3 family Intel Xeon E5-46xx v3 family Intel Xeon E7-48xx v3 family Intel Xeon E7-88xx v3 family * Intel Xeon E5/E7 v4 server processors Intel Xeon E5-16xx v4 family Intel Xeon E5-26xx v4 family Intel Xeon E5-46xx v4 family Intel Xeon E7-48xx v4 family Intel Xeon E7-88xx v4 family * Intel Xeon Scalable server processors Intel Xeon D family Intel Xeon Bronze family Intel Xeon Silver family Intel Xeon Gold family Intel Xeon Platinum family Addresses scanned: PECI client address 0x30 - 0x37 Datasheet: Available from http://www.intel.com/design/literature.htm Author: Zbigniew Lukwinski Description ----------- This driver implements a generic PECI hwmon feature which provides average power consumption readings of the memory basing on energy counter. Power value is average power since last measure given in milli Watt and will be measurable only when the target CPU is powered on. Driver provides current plane power limit, maximal and minimal power setting as well. All needed processor registers are accessible using the PECI Client Command Suite via the processor PECI client. ``sysfs`` interface ------------------- ======================= ======================================================= power1_label Provides string "dimm power". power1_average Provides average DRAM power since last read in milli Watt. power1_cap Provides current DRAM plane power limit. power1_cap_max Provides maximal DRAM power setting. power1_cap_min Provides minimal DRAM power setting. ======================= =======================================================